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/
meta_disk_cache.h
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meta_disk_cache.h
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#ifndef __META_DISK_CHCHE_H__
#define __META_DISK_CHCHE_H__
#pragma pack(4)
typedef struct tag_disk_minfo {
uint32_t magic; /* 캐시 파일인지 확인용 특수 문자 */
uint32_t version; /* cache format 버전, 버전이 틀린 경우 해당 캐시 삭제 */
char key[1024]; /* service->name+url */
char st_devid[128]; /* req->objstat.st_devid와 동일, media의 변경 기준 */
time_t vtime; /* 미디어의 만료 시간 */
time_t mtime; /* 미디어의 변경 시간 */
uint64_t media_size; /* 원본 미디어의 파일 크기 */
uint64_t meta_size; /* 저장되는 metadata 크기 */
} disk_minfo_t;
#pragma pack()
#define MEDIA_CACHE_HEADER_MAGIC 0x5AA5B53B
#define MEDIA_CACHE_VERSION 4
#define MEDIA_CACHE_BASE_OFFSET 2048
#define MEDIA_METADATA_CACHE_DIR_MAX_LEN 128
#define MEDIA_METADATA_CACHE_PATH_MAX_LEN MEDIA_METADATA_CACHE_DIR_MAX_LEN+32
#define MEDIA_METADATA_CACHE_EXT "mdc" /* 캐시 파일 확장자 */
#define MEDIA_METADATA_CACHE_REMOVE "REMOVE" /* 삭제된 파일 경로 */
typedef struct tag_mdc_context {
void *req;
FILE *fd;
off_t base_offset; /* 기준 offset */
} mdc_context_t;
int mdc_init();
int mdc_deinit();
int mdc_disable_cache_file(nc_request_t *req, char *url);
zipperCnt mdc_load_cache(nc_request_t *req, struct nc_stat *objstat, char *url);
int mdc_save_cache(nc_request_t *req, media_info_t *media, int is_update);
#endif /*__META_DISK_CHCHE_H__ */
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